6068HI550 | EU Stage V | Industrial Diesel Engine

Features

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Stage V.

John Deere has billions of hours of field experience with off-highway diesel engine technologies and launched many of its engines ahead of EPA and EU deadlines, and is ready to meet Stage V emissions regulations using our proven diesel particulate filter (DPF) solutions. In most cases, OEM customers currently using a John Deere engine with a diesel particulate filter (DPF) won’t have to re-engineer machine design to meet the requirements of Stage V regulations. Our engineers continue to employ a global network of technical resources and the latest technology to lower emissions while improving performance and fluid efficiency.

Variable geometry turbocharger (VGT)

Varies exhaust pressure based on load and speed to ensure proper EGR flow. The combination of the cooled EGR and VGT provide low-speed torque, quicker transient response, higher-peak torque, and world-class fuel economy.

Exhaust filters

These engines utilize a catalyzed exhaust filter that contains a diesel oxidation catalyst (DOC) and a diesel particulate filter (DPF). The DOC reacts with exhaust gases to reduce carbon monoxide, hydrocarbons, and some particulate matter (PM). The downstream DPF traps and holds the remaining PM. Trapped particles are oxidized within the DPF through a continuous cleaning process called passive regeneration. Passive regeneration occurs during normal operating conditions when heat from the exhaust stream, and catalysts within the exhaust filter, trigger the oxidation of the trapped PM. If passive regeneration cannot be achieved due to low temperature, load, or speed, then PM is removed using active regeneration — an automatic cleaning process controlled by the exhaust temperature management system.

Cooled exhaust gas recirculation (EGR)

EGR cools and mixes measured amounts of cooled exhaust gas with incoming fresh air to lower peak combustion temperatures, thereby reducing Nox.

Selective catalytic reduction (SCR)

John Deere engines feature an SCR system that utilizes a urea-based additive, sometimes referred to as diesel exhaust fluid (DEF) to meet Stage V emission standards. A chemical reaction in the SCR catalyst converts urea and NOx emissions into nitrogen and water vapor.

High-pressure common-rail (HPCR)

The HPCR fuel system provides variable common-rail pressure and high injection pressures. It also controls fuel injection timing and provides precise control for the start, duration, and end of injection.

Air-to-air aftercooled

This is the most efficient method of cooling intake air to help reduce engine emissions while maintaining low-speed torque, transient response time, and peak torque. It enables an engine to meet emissions regulations with better fuel economy and the lowest installed costs.

4-valve cylinder head

The 4-valve cylinder head provides excellent airflow resulting in excellent low-speed torque and transient response.

Compact size

Lower installed cost
Mounting points are the same as previous engine models

John Deere electronic engine controls

Faster engine control unit (ECU) manages both the engine and the exhaust filter
Premium software option integrates with equipment or vehicles to reduce engineering and installation costs

Big-engine durability

Replaceable (wet) cylinder liners
Oil-cooled pistons with hardened ring groove insert
Full flow engine-mounted oil cooler
Up to 500-hour oil change

Additional features

Glow Plugs cold start aid
Engine or remote mounted fuel filters
Gear-driven auxiliary drives
Self-adjusting poly-vee fan drive with optional variable-speed fan
Optional electric fuel transfer pump with “auto-prime” feature

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Specifications

John Deere

6068HI550

6.8L Industrial Diesel Engine

EPA Final Tier 4

EU Stage V

Model

6068HI550

Number of cylinders

Displacement-- L (cu in)

6.8 (415)

Bore and Stroke-- mm (in)

106 x 127 (4.2 x 5.0)

Compression Ratio

17.2 : 1

Engine Type

In-line, 4-cycle

Aspiration

Turbocharged and air-to-air aftercooled

Length - mm (in)

1160 (46.0)

Width-- mm (in)

716 (28.2)

Height-- mm (in)

1147 (45.2)

Weight, dry - kg (lb)

730 (1614)

DOC/DPF

Size 3
Size 4

SCR Catalyst

Size 3
Size 4

Rated power

104-187 kW (140-250 hp) @ 2000-2400 rpm

Peak power

104-187 kW (140-250 hp) @ 1800-2400 rpm

Application rating

Continuous, Heavy Duty, Intermittent

Peak torque

552-1000 nM (407-738 lb-ft) @ 1600 rpm

Power bulge

up to 10%

Torque rise

up to 35%

6068HI5506.8L Industrial Diesel Engine

Features

Stage V.

Variable geometry turbocharger (VGT)

Exhaust filters

Cooled exhaust gas recirculation (EGR)

Selective catalytic reduction (SCR)

High-pressure common-rail (HPCR)

Air-to-air aftercooled

4-valve cylinder head

Compact size

John Deere electronic engine controls

Big-engine durability

Additional features

Specifications

Emissions Certifications

General engine data

ATD

Performance data range

Power Connect

Customer Connections

Brochures

Learn More

Engine Parts

Explore More

Connect with us

Find Sales or Services

6068HI5506.8L Industrial Diesel Engine

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Features

Specifications

Emissions Certifications

General engine data

ATD

Performance data range

Power Connect

Customer Connections

Brochures

Learn More

Engine Parts

Explore More

Connect with us

Find Sales or Services